From 3588dd6e994b38b02c2f60544fe2f69ce5fdf927 Mon Sep 17 00:00:00 2001 From: Jonathan Tan Date: Fri, 18 Aug 2017 15:20:29 -0700 Subject: pack: move unpack_object_header() Signed-off-by: Jonathan Tan Signed-off-by: Junio C Hamano --- packfile.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'packfile.c') diff --git a/packfile.c b/packfile.c index 9e0bbf5a0e..d4a78b1ac9 100644 --- a/packfile.c +++ b/packfile.c @@ -949,3 +949,29 @@ unsigned long get_size_from_delta(struct packed_git *p, /* Read the result size */ return get_delta_hdr_size(&data, delta_head+sizeof(delta_head)); } + +int unpack_object_header(struct packed_git *p, + struct pack_window **w_curs, + off_t *curpos, + unsigned long *sizep) +{ + unsigned char *base; + unsigned long left; + unsigned long used; + enum object_type type; + + /* use_pack() assures us we have [base, base + 20) available + * as a range that we can look at. (Its actually the hash + * size that is assured.) With our object header encoding + * the maximum deflated object size is 2^137, which is just + * insane, so we know won't exceed what we have been given. + */ + base = use_pack(p, w_curs, *curpos, &left); + used = unpack_object_header_buffer(base, left, &type, sizep); + if (!used) { + type = OBJ_BAD; + } else + *curpos += used; + + return type; +} -- cgit v1.2.3